Yo Frankie is a open source game created by the Blender institute. The initial release date was in November 2008. The game is created using only free software. The game is 3D and the graphics are really good. You play the character Frank who is a flying squirrel. You can pick up animals, throw stuff and glide. You need to get through the level to progress further in the game. It is really nice to see what people are able to do with free software. Check out Yo Frankie and you will be impressed with the graphics.